53
OPERATING PROCEDURE: Manual Measurement
3.8.2
PS (Pupil Size) measurement
The following is the procedure to measure the Pupil Size (PS). When continuing PS (Pupil Size) mea-
surement from CS (Corneal Size) measurement, start from Step 5.
1
Press the CS/PS/PD
button to enter PS mea-
surement mode.
“PUPIL SIZE” and guide lines are displayed on the screen.
2
When measuring the pupil size under reduced lighting, turn off the chart-illuminating
lamp in the measuring window.
Press the lamp
button to turn on or off the chart-illuminating lamp.
When the chart-illuminating lamp is not lit, “LAMP:OFF” is displayed.
Instruct the patient not to look around and watch ahead without straining.
3
Manipulate the joystick to perform alignment and
focusing of the patient’s eye.
The auto tracking function is automatically turned off.
Manually operate the joystick to perform alignment and focus-
ing according to the patient’s eye.
4
Press the start button to capture the image.
The screen switches from a live image to a still image. After image capture, instruct the patient to rest
comfortably.
• When the mode is switched to PS measurement mode while a still image is displayed on the CS
(Corneal Size) measurement screen, the image displayed is still.
• To recapture the patient’s eye after turning on or off the lamp
button, press the start button
twice.
The screen switches to the Step 1 screen display.
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LAMP:ON
Measures the pupil size during AR measurement
LAMP:OFF
Measures the size of the pupil dilated in darkness
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Summary of Contents for ARK-1S
Page 1: ...AUTO REF KERATOMETER AUTO REF KERATOMETER ARK 1s ARK 1s OPERATOR S MANUAL OPERATOR S MANUAL ...
Page 6: ...IV ...
Page 76: ...70 OPERATING PROCEDURE Operation when Peripheral Devices are Connected ...
Page 112: ...106 SPECIFICATIONS AND TECHNICAL INFORMATION EMC Electromagnetic Compatibility ...